@media screen and (min-width: 1200px) {
    html {
        font-size: 20px;
    }
}

.transEle {
    /*transition-duration: 1s;*/
    /*transition-property: width,margin-left;*/
}
.fl {
    float: left;
}
.aside {
    padding: 5px 10px;
    margin-left: 10px;
    width: 20%;
    float: left;
    height: 100%;
    overflow: auto;
}
.content {
    width: calc(80% - 10px);
    float: left;
    height: 100%;
}
.scaler {
}
.aside.collapsing {
    display: none;
    margin-left: 0;
    padding: 0;
    width: 0;
}
.content.collapsing {
    width: 100%;
}
.p {
    height: 100vh;
}
.full {
    width: 100%;
    height: 100%;
}
.center {
    display: flex;
    align-items: center;
    justify-content: center;
}
.back-btn{
    z-index: 1000;
    cursor: pointer;
    position: fixed;
    bottom: 10%;
    right: 10%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    width: 70px;
    height: 70px;
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, .12), 0 0 6px rgba(0, 0, 0, .04);
    font-size: 14px;
}